Provide event to onRelease(), phetsims/density-buoyancy-common#356

Signed-off-by: Michael Kauzmann <[email protected]>

js/imports.ts

@@ -206,7 +206,7 @@ export { default as PDOMTree } from './accessibility/pdom/PDOMTree.js';
 export { default as PDOMFuzzer } from './accessibility/pdom/PDOMFuzzer.js';
 
 export type { default as TInputListener } from './input/TInputListener.js';
-export type { SceneryListenerFunction, SupportedEventTypes } from './input/TInputListener.js';
+export type { SceneryListenerFunction, SceneryNullableListenerFunction, SupportedEventTypes } from './input/TInputListener.js';
 export { default as Pointer, Intent } from './input/Pointer.js';
 export { default as Mouse } from './input/Mouse.js';
 export { default as Touch } from './input/Touch.js';

js/input/TInputListener.ts

@@ -13,6 +13,7 @@ import StrictOmit from '../../../phet-core/js/types/StrictOmit.js';
 import { Hotkey, SceneryEvent } from '../imports.js';
 
 export type SceneryListenerFunction<T extends Event = Event> = ( event: SceneryEvent<T> ) => void;
+export type SceneryNullableListenerFunction<T extends Event = Event> = ( event: SceneryEvent<T> | null ) => void;
 
 type TInputListener = {
   interrupt?: () => void;